100 lines
2.4 KiB
C++
100 lines
2.4 KiB
C++
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#include "stdfx.h"
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#include "tfxparam.h"
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namespace
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{
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template <typename T, typename PIXEL>
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void prepare_lut(int levels, vector<T> &lut)
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{
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int i, j;
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int valuestep = PIXEL::maxChannelValue / (levels - 1);
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int step = PIXEL::maxChannelValue / levels;
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for (j = 0; j < levels; j++)
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for (i = 0; i <= step; i++)
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lut[i + j * step] = j * valuestep;
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}
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}
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//===================================================================
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class PosterizeFx : public TStandardRasterFx
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{
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FX_PLUGIN_DECLARATION(PosterizeFx)
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TRasterFxPort m_input;
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TDoubleParamP m_levels;
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public:
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PosterizeFx()
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: m_levels(7.0)
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{
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bindParam(this, "levels", m_levels);
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addInputPort("Source", m_input);
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m_levels->setValueRange(2.0, 10.0);
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}
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~PosterizeFx(){};
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bool doGetBBox(double frame, TRectD &bBox, const TRenderSettings &info)
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{
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if (m_input.isConnected()) {
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bool ret = m_input->doGetBBox(frame, bBox, info);
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return ret;
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} else {
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bBox = TRectD();
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return false;
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}
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}
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void doCompute(TTile &tile, double frame, const TRenderSettings &ri);
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bool canHandle(const TRenderSettings &info, double frame) { return true; }
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};
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//-------------------------------------------------------------------
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template <typename PIXEL, typename CHANNEL_TYPE>
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void doPosterize(TRasterPT<PIXEL> ras, int levels)
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{
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vector<CHANNEL_TYPE> solarize_lut(PIXEL::maxChannelValue + 1);
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prepare_lut<CHANNEL_TYPE, PIXEL>(levels, solarize_lut);
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int j;
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ras->lock();
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for (j = 0; j < ras->getLy(); j++) {
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PIXEL *pix = ras->pixels(j);
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PIXEL *endPix = pix + ras->getLx();
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while (pix < endPix) {
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pix->r = (CHANNEL_TYPE)(solarize_lut[(int)(pix->r)]);
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pix->g = (CHANNEL_TYPE)(solarize_lut[(int)(pix->g)]);
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pix->b = (CHANNEL_TYPE)(solarize_lut[(int)(pix->b)]);
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*pix++;
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}
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}
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ras->unlock();
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}
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//-------------------------------------------------------------------
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void PosterizeFx::doCompute(TTile &tile, double frame, const TRenderSettings &ri)
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{
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if (!m_input.isConnected())
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return;
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m_input->compute(tile, frame, ri);
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int levels = (int)m_levels->getValue(frame);
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TRaster32P raster32 = tile.getRaster();
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if (raster32)
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doPosterize<TPixel32, UCHAR>(raster32, levels);
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else {
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TRaster64P raster64 = tile.getRaster();
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if (raster64)
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doPosterize<TPixel64, USHORT>(raster64, levels);
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else
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throw TException("Brightness&Contrast: unsupported Pixel Type");
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}
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}
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FX_PLUGIN_IDENTIFIER(PosterizeFx, "posterizeFx");
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